Engineering Board Exam Reviewer · Engineering Materials · medium

The modulus of elasticity of most metals with increasing temperature generally:

1. Increases
2. Decreases
3. Remains exactly constant
4. Becomes negative

Answer

B. Decreases

Solution

Interatomic bonds become weaker as atoms vibrate more.

More Engineering Materials questions

1. Which property primarily determines a material's resistance to elastic deflection?
2. Stress concentrations at holes, notches and sharp corners are especially dangerous under:
3. The three stages of a typical creep curve are:
4. Hydrogen embrittlement in high-strength steels results in:
5. The fracture surface of a fatigue failure typically shows:
6. Welding of high-carbon steels is difficult mainly because:
7. Powder metallurgy involves:
8. Hot working is performed:
9. Cold working a metal generally:
10. Steel has E = 200 GPa and = 7.85 g/cm3; aluminum has E = 70 GPa and = 2.70 g/cm3. Which has the higher specific stiffness (E/ )?

All Engineering Materials Reviewer questions